Asked by Chris
The mean of Susan's math and science scores is 74 points. The mean of her math and English scores is 83 points. How many more points did Susan score in English than in science?
Answers
Answered by
Reiny
(m + s)/2 = 74
m+s = 148
(m + e )/2 = 83
m+ e = 166
subtract them:
e - s = 18
m+s = 148
(m + e )/2 = 83
m+ e = 166
subtract them:
e - s = 18
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